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annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/LogLinearFittingOperation.java @ 9646:0380717105ba

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Implemented alternative fitting strategy for Log-Linear function.
author Gernot Belger <g.belger@bjoernsen.de>
date Mon, 02 Dec 2019 17:56:15 +0100
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9646
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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2 * Software engineering by
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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3 * Björnsen Beratende Ingenieure GmbH
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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5 *
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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6 * This file is Free Software under the GNU AGPL (>=v3)
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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8 * documentation coming with Dive4Elements River for details.
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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9 */
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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10 package org.dive4elements.river.artifacts.model.fixings;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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11
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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12 import java.util.List;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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13
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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14 import org.dive4elements.river.artifacts.math.fitting.LogLinearAlternative;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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15 import org.dive4elements.river.artifacts.model.fixings.fitting.LinearLogLinearizedFitting;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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16 import org.dive4elements.river.artifacts.model.fixings.fitting.LinearLogLinearizedFitting.Result;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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17
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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18 /**
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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19 * @author Gernot Belger
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
Gernot Belger <g.belger@bjoernsen.de>
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20 */
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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21 final class LogLinearFittingOperation extends AbstractFittingOperation implements IFittingOperation {
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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22
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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23 public LogLinearFittingOperation(final LogLinearAlternative function) {
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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24 super(function);
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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25 }
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26
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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27 @Override
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28 public Fitting execute(final List<FittingData> data) {
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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29
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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30 final double[] obsDischarges = new double[data.size()];
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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31 final double[] obsWaterlevels = new double[data.size()];
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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32
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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33 for (int i = 0; i < data.size(); i++) {
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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34 final FittingData fittingData = data.get(i);
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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35
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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36 obsDischarges[i] = fittingData.q;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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37 obsWaterlevels[i] = fittingData.w;
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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38 }
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39
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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40 final LinearLogLinearizedFitting fitting = new LinearLogLinearizedFitting(obsDischarges, obsWaterlevels);
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41
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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42 final Result result = fitting.optimize();
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43 final double a = result.getA();
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44 final double b = result.getB();
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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45 final double m = result.getM();
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46 final double chiSquare = result.getChiSquare();
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47
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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48 final double[] parameters = new double[] { a, m, b };
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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49
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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50 return createFitting(parameters, chiSquare, data);
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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51 }
0380717105ba Implemented alternative fitting strategy for Log-Linear function.
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52 }
http://dive4elements.wald.intevation.org